Hi,
Link bait is any content or feature which is interesting enough to catch visitors. The content for link baiting would be a text, video, image and so on but is powerful enough to catch the people's attention.
It extremely helps to bring organic in nature because it is that form of marketing which is said to be viral in nature.

The internet is huge; sometimes it feels like everything has already been written about. Fortunately people tend to write the same thing. If you want to write about a topic that has already been written about a lot, come at it from a different angle. If everyone is writing about why something sucks, write about why it’s awesome. And don’t just say it’s awesome, back it up and make a case for why it’s awesome.